Grain-door for cars.



PATENTED MAR. 22, 1904.

J. B. MAOLAUG'HLIN. GRAIN DOOR FOR CARS.

APPLIGATION FILED SEPT. 29, 1903.

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UNITED STATES Patented March 22, 1904.

PATENT OEErcE.

GRAIN-DOOR FOR CARS.

SPECIFICATION forming part of *Letters l atent No. 755,511, dated March22, 1904. Application filed September 29, 1903. Serial No. 175,039. (NomodeL) To all whom it may concern:

Be it known that I, JOHN BEVERLY MAC- LAUGHLIN, acitizen of the Dominionof (Janada, residing at the city of Vancouver, in the Province ofBritish Columbia,Canada, have invented a new and useful Improvement inGrain-Doors for Cars, of which the following is a specification.

i My invention relates to an improved car grain-door which has beendesigned as a supplementary provision for use on box-cars when such areemployed for grain haulage; and my object has been to provide a doorthat when not required will form no obstruction to the ordinary doorwayof the car, that will for obvious reasons have the constructive andoperative features of the box-car door in common use, and that canreadily be applied to existing cars without any structural changethereof.

A further and important feature in this invention lies in the provisionof an auxiliary or relief door of small size toward the lower middlepart of the grain-door proper, which relief-door, being of small size,can be readily opened to permit the escape of the grain from theproximity of the main door and relieve the pressure against it, whichwould otherwise render it hard to open.

The particular manner in which these several objects are attained andthe operation of the door are fully set forth in the followingspecification, reference being made to the accompanying drawings, inwhich Figure 1 is an elevation from within of the doorway, showing thesupplementary graindoor and its housing. Fig. 2 is an enlarged verticalsection through the door on the line a a in Fig. 1, and Fig. 3 is adetail section of the telescopic track-rail on which the door is hung.

In the drawings, 2 represents the siding of the car, the flooring beingindicated by 3, the roof-sill by 4, and the door-posts by 5 and 6, 2being the reinforced siding used where a car is intended to be employedas a grain-carrier.

The supplementary door 7, which is the subj ect of this application, isaltogether independent of the ordinary door of the car, being slidablymounted within the siding of the car,

and is of sufiicient height only to satisfy the requirements of thehighest grain-level. The door is hung in the usual manner by sheaves 8from a rail 9 10. This rail is made in two lengths 9 and 10, slidableone on the other, so that when the grain-door is not required theportion 9 which extends across the doorway may be slidably shippedwithin the housing 11 over the portion of the rail lOon whichthe doorruns within the housing. The manner in which I prefer these two portionsof the rail 9 and 10 to be slidably telescopic is indicated in Fig. 3,the portion 9 having its upper edge bent over, as 9, toengage the upperedge of the fixed rail portion 10. With this construction the strongersection 9 is that which bridges the doorway when in use and which theflanges of the carrying-sheaves more closely fit.

The door may be framed in any suitable manner, but is preferably madedouble, as shown in Fig. 2, as affording a convenient means for housingbetween its thicknesses the relief-door 12. This relief-door closes anopening 13, centrally situated toward the lower edge, and is preferablymade in two sections, each half being pivotally mounted toward its outerlower corner, as at 1A, and provided with a hand engagement, as 15, bywhich they may be opened apart, as indicated by the dotted path-lines inFig. 1, where one half of the door is shown closed and the left-handhalf partially open.

12 12 are combined wear and reinforcing plates over the opposite edgesof the opening 12.

I do not desire to be confined to the particular pivotally-openingrelief-door illustrated, as such door may occupy the whole width of thegrain-door proper and be slidable vertically within or on the face ofit.

When the car is to be used for carrying grain, the rail portion 9 isdrawn out and removably secured to the bracket 6, mounted on thedoor-post 6 by a pin 6, that joins the rail 9 with the bracket 6*, asclearly shown in Fig. 1. The supplementary door may then be run out toclose the doorway to the graincarrying level. When such a door is inuse,

the weight of grain in contact with the inner surface would form aserious hindrance to its being moved, and to relieve the pressureagainst it the auxiliary door 12 is opened and suflicient grain willescape from the opening 13 to free the main door 7 from the lateralpressure and permit of its being pushed within the housing 11.

When the car is required for the ordinary use of a box-car, the door ispushed within the housing 11, and the doorway extension 9 of thetrack-rail is also shipped therein on the portion 10, which ispermanently secured there. An important advantage of the doorconstruction here revealed lies in the fact that the movement of neitherthe door 7 nor its relief-door 12 is hindered by any necessity for graindisplacement, as the doors slide direct within their housings and thelateral friction only is to be contended with.

Having now particularly described my invention and the manner of itsoperation, I declare that what I claim as new, and desire to beprotected'in by Letters Patent, is

1. The combination with a car having the usual door-opening in the sidethereof, and a rail slidable across the said opening and connected tothe car-body; of a supplementary door slidable on the inner side of thecar over the usual door-opening and supported upon the said rail forendwise sliding movement, said supplementary door having an opening anda closure member upon said supplementary door for closing the openingtherein.

2. As a grain-door for box-cars, a supplementary door slidable on theinner side of the car across the existing doorway, a rail adapted tosustain the running-sheaves of such door, which rail is slidable endwisetelescopically together that the portion across the door may be removedtherefrom.

3. As a grain-door for box-cars, a supplementary door slidable on theinner side of the car across the existing doorway, a housing against thevinner side of the car to receive such door and shield it from the grainwithin the car and a rail on which the door is hung by means of sheaves,such rail being in two sections, the section across the doorway beingslidable endwise on the section within the housing, substantially as andfor the purpose specified.

4. For a car of the character described; a supplementary door slidableacross the inner side of the main door-opening in the said car, the saidsupplementary door having a reliefopening and a hollow chamber incommunication with the said relief-opening, and a 010- sure part mountedin the said hollow chamber to close over the relief-opening, as setforth.

5. A supplementary door for grain-cars slidable across the inside of theusual doorway thereof, said supplementary door having hollow spaceswhich extend lengthwise thereof, and a relief-opening in communicationwith the said spaces, a pair of pivoted door-sections mounted within thespaces of the supplementary door adapted to fold back into the a saidspaces when turned to their open position.

6. As a supplementary grain-door for cars, the rail 10 secured withinthe car-siding, the rail 9 slidable telescopically on 10, the door 7carried by sheaves 8 on the rails 9, 10, the housing 11 to inclose thedoor when run clear of the doorway,the relief-opening 13 closable withdoors l2 pivotally mounted on pins 14:, all substantially as described:

In testimony whereof I have hereunto signed my name in the presence oftWo subscribing Witnesses.

JOHN BEVERLY MACLAUGHLIN.

